CVE-2021-44056

Name: CVE-2021-44056
Creator: NVD / NIST
Published: 2022-05-05T17:15:10.453+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.83%

Last modified Jun 17, 2026

CVE-2021-44056 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An improper authentication vulnerability has been reported to affect QNAP device running Video Station. If exploited, this vulnerability allows attackers to compromise the security of the system. EPSS estimates a 0.83% chance of exploitation in the next 30 days.

Description

An improper authentication vulnerability has been reported to affect QNAP device running Video Station. If exploited, this vulnerability allows attackers to compromise the security of the system. We have already fixed this vulnerability in the following versions of Video Station: Video Station 5.5.9 and later Video Station 5.3.13 and later Video Station 5.1.8 and later

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.83%

52.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Qnap	Video Station	< 5.1.8
Qnap	Video Station	>= 5.2.0, < 5.3.13
Qnap	Video Station	>= 5.4.0, < 5.5.9

References

https://www.qnap.com/en/security-advisory/qsa-22-14Vendor Advisory
https://www.qnap.com/en/security-advisory/qsa-22-14Vendor Advisory

Timeline

Published: May 5, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44056?

How severe is CVE-2021-44056?

CVE-2021-44056 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.83% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44056?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-44056?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST